Patent US2421318A successfully refreshed from Google Patents.
US2421318A
Expired / Lapsed
US
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Fluid pressure motor of the expansible chamber type with piston operated snap action valve
Assignee: Gilbarco Inc
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Filing: 1944-10-30
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Granted: 1947-05-27
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Expires: 1964-10-30
Abstract
No abstract record available.
Inventors
- 👤 Lancey Warren H De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:00
CPC Classifications
F; F01; F01B; F01B17/00; F01B17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189318865A
Cited
US837252A
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FR576229A
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US1845176A
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US1765921A
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US2057364A
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US2163436A
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US2268898A
Cited
US2215852A
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US2269423A
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US2314714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-26 | 1950-11-25 | 1951-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-26 | 1954-11-25 | 1955-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-26 | 1958-11-25 | 1959-05-27 | $7700.00 | Window Closed / Lapsed |